Understanding the Search for a Resistivity Imaging System Quote
A useful resistivity imaging system quotation connects equipment specifications to a defined investigation. Buyers need to consider the target, survey geometry, field conditions, processing requirements, and support arrangements.
Geomative supplies geophysical instruments and subsurface data software. Its GD range includes different resistivity and induced polarization configurations, allowing buyers to compare acquisition capacity and deployment requirements against their project objectives.
The starting point is a model-specific proposal with a clear list of included hardware, accessories, and software.
Geomative’s Resistivity and IP Imaging System Line
The GD range includes both single-channel and multichannel instruments. Current product listings include GD-10, GD-20, and the GD-12/22/32 family.
These models should not be treated as identical systems. The appropriate choice depends on the measurement sequence, survey coverage, required IP functions, and practical acquisition schedule.
For teams comparing models, each quotation should address the same survey brief so that differences in equipment and deliverables are visible.
Core Technical Specifications
The current GD-12/22/32 specification table lists:
| Model | Receiving channels | Maximum transmit power | Full-waveform acquisition |
|---|---|---|---|
| GD-12 | 1 | 7.2 kW | No |
| GD-22 | 6 | 15 kW | Yes |
| GD-32 | 12 | 15 kW | Yes |
The GD-10 is a single-channel instrument. GD-20 specifications vary by version, with 9 kW listed as an optional configuration.
The GD-12/22/32 table also lists 24-bit A/D conversion and power-line rejection of at least 120 dB. These describe particular instrument characteristics rather than guaranteed field results.
Maximum transmitter ratings must be considered alongside the operating limits of the complete configuration. Power supplies, cables, switching equipment, and measurement modes can affect the usable setup.
Modular Hardware for Multiple Survey Environments
Different survey environments require different layouts and accessories. Surface profiles, borehole measurements, cross-hole investigations, and water-based surveys should each be specified in the equipment proposal.
A modular approach can support configuration changes where compatible components are available. Buyers should nevertheless confirm exactly what must be added or changed for each deployment.
Survey planning should also account for transport, cable handling, electrode installation, power availability, and access. These factors influence practical productivity alongside the instrument’s acquisition capacity.
Roll-Along Acquisition and On-Site Quality Control
Roll-along acquisition extends survey coverage. It is separate from the tools used to inspect measurement quality.
Relevant field checks include electrode-contact testing, data-list review, waveform inspection where available, and repeat measurements. These checks help crews investigate questionable observations before leaving the site.
A demonstration should show how operators identify problems, document corrective action, and preserve the information needed for processing. Necessary repeat observations remain part of a reliable survey.
Industry Applications of the GD Series
Resistivity and IP methods can support mineral exploration where geological targets produce useful electrical contrasts. They can also contribute to hydrogeological, engineering, environmental, and archaeological investigations.
Each application requires its own survey design and interpretation criteria. An electrical anomaly does not independently confirm mineralization, an aquifer, a leakage pathway, a void, or contamination.
Appropriate verification may include drilling, sampling, inspection, or other supporting measurements. For long-term monitoring, the proposal should also define maintenance, data review, and procedures for investigating significant changes.
Integration with the DIGspace Geoscience Platform
Processing software should preserve the connection between field observations, acquisition settings, and interpreted models.
DIGspace provides an ERT workflow that includes data review and online inversion. Buyers should confirm the modules, supported formats, and software access included in the quotation, particularly where IP processing or several survey methods are involved.
Geomative Studio documentation lists exports including TXT, Excel, DAT, and URF. These functions should be attributed to the relevant application and tested with the intended downstream tools.
Displaying datasets together can support interpretation, but does not automatically establish joint inversion. Remote teams should also confirm connectivity requirements, offline arrangements, and access to original data.
Documented Field Applications
Geomative’s Brazil gold exploration case identifies a GD-10 instrument used for resistivity and IP investigation. It provides a reference for investigating potential mineralization targets rather than evidence that every GD model delivers equivalent results.
The Beishan lead-zinc mine case concerns GT-30 transient electromagnetic work. Its reported outcomes should remain attributed to that method and project configuration.
Heritage and landfill case studies require the same distinction between observations, interpretations, and verified findings. Electrical contrasts may guide further investigation, but claims about structural boundaries, leakage, or contaminated volumes should be supported by appropriate independent evidence.
When reviewing references, ask for the equipment configuration, survey geometry, geological conditions, processing approach, and available verification.
Company Background and Support Arrangements
Geomative’s instrument and software portfolio can provide a basis for discussing a coordinated survey workflow.
For procurement, establish who will provide training, how technical questions will be handled, where repairs will take place, and which spare parts are available. These arrangements should be stated in the proposal rather than inferred from international customer coverage.
Company credentials provide background; project-relevant demonstrations and clear delivery commitments provide a more direct basis for evaluating the purchase.
Accessories Supporting the Resistivity Workflow
A complete system may require survey cables, electrodes, switching devices, power supplies, and environment-specific components.
Cable heads and power boosters should be selected for the exact instrument and measurement mode. Do not assume that an accessory is compatible with every GD model or that it enables the instrument’s maximum rating in every survey arrangement.
Request an itemized configuration with operating limits, connection requirements, and the components needed for planned future deployments.
Final Considerations for Buyers Evaluating a Resistivity Imaging System
Prepare a project brief covering the target, expected depth, survey layout, required measurements, field constraints, and processing deliverables.
Then compare GD configurations against that brief. Request a representative demonstration covering acquisition, field checks, data transfer, and processing, together with a clear statement of training and support.
This provides a practical basis for choosing a resistivity imaging system whose capabilities and complete configuration match the work.
https://www.geomative.com/
Geomative Co., Ltd.